Shock-absorbing rosette.



S. B. PAINE. SHOCK ABSOBBING 110mm APPLICATION FILED H1111, 1910.

Patented Apr, 9, 1912.

Inventor" S neg Paine,

Witn e-Sses To all whom it may concern:

UNITE PATENT 1 smnnv 21mm,

I snocx-usomame nosn'r'rn.

V Speclflcatlon'otiettersPatent. 5 Patented Apr. 9 1912 Application mea'r eb ar i, 1910. s am No. 543,367.

Be it known that I, SIDNEYB. Paint, a

. citizen of the United St-ates, residing at Newton, county of Middlesex, State of Massachusetts, have invented certain new. and useful Improvements in shock Absorbing Rosettes, of which the followmgis a specification.

This invention relates to electric in'can descent lamps, and especially to those having delicate orfragile filaments which are liable tobe'broken by alsudden. jar or by constant vibration. It is well known that in mills,- moving vehicles and many othersituations', incandescent "lamps are short-lived because of the constant vibrations and 'ars to which their supports are subjected. arbon filaments last fairly well, but the more. modern high-powered lamps have filaments made of refractory metals, such as tungsten, which are extremely brittle and liable to fracture. Hence when such lamps are used inmills, or railway cars, or in any situation where vibration occurs, provision must be made for absorbing such vibration to prevent early destruction of the lam filaments.

Heretofore, anti-vibration devices for incandescent lamps have depended upon metallic springs, but it is found that they do not work well with tungsten and simllar fragile filaments, owingto'theirlhigh elasticity and their tendency to transmit vibrations along their length.

- The ob ect of my invention is to avoid, these troubles and provide a rosette wherein a cushionof comparatively inert or sluggishly elastic material is used so that lamps suspended thereby from the ceilings of mills willnot be afit'ected by the vibrations due to the machinery.

To this end myv invention consists in a rosette having a chamber in which is con tained a wad or bunch of some slightly elastic. material, preferably: felt; though cloth, cotton, wool,- asbestos or gother'fibrousmaterial may be used if desired. .Passing cen' trally through this wad of felt is a-tubular plug having a tapering flange or head at its upper'end. The lamp cord 1s knotted above thishead, and runs down through the plug, so that the weight of thelamp s supportedby the flange or head resting on the felt cushion, which absorbs all vibrations and" protects the lamp filaments from breakage.

herein shown and describe In theaccompanying drawing, Figure'l ofthe under side of the base; and Fig. 3 is a sectional perspective viewof'the body of the rosette.

The rosette may be eltherfuseless or fused, I r as desired. The base 1, body 2, and plug 3 are made of molded insulating material, such asporcelain. The base isa flat slab,

having grooves 4 for the passage of the line wires, and holes .5 for the screws by which it is fastened to a ceiling or other support.

It also has recesses 6 over which project the metallic catches 7, whose other ends intersect the grooves 4, and have binding screws said catches.-

' Seated in recesses in the upper end of the hollow body 2 are metallic hooks 9 which are adapted to enter the recesses 6 and engageiwith the catches 7 by. a bayonet-joint movement. The hooks have binding screws 10 for the ends of the flexible lamp cord 11 i a side elevation of a fuseless rosette em- .bodying my invention; Fig. 2 is a plan view 8 by whlch the line wires are connected to s which is cut into circuit with the line wires when the hooks engage the catches.

A knot 12 in the cord'rests in a countersink in the top of a tubular plug 3 which extends down through the opening 13 at the bottom of the body 2; the cord beingrove t rough said-plug. At the upper end of the p mg is a flange or head 14, whose outer sur ace is tapering, as shown.

Filling the space between the plug and the walls of the body 2 is a wad or cushion 15 of fibrous material, preferably felt. It' supports the tapered head of the plug, so

'that the weight of the lamp at the end ofv the cord is sustained by said cushion. The tapered head prevents the plug from being pulled down through the -.cushion.- It also gives a more extended bearing surface onthe felt than a plain flange would do, and exerts its pressure laterally as well as vertically, thus obtaining a better cushioning efi'ect. j

The felt is slightlyelastic but not enough so to oscillate when pressure is relieved, so

that it effectually damps' all vibrations imparted to itand prevents any injury to the most fragile filament. I I do not desire torestrict myself to the particular form or' arrangement "of parts since it is a Iplarent that they may be changed and mo ied without departing from my invention.

' What I" claim as new and desire to secure by Letters Patent of the United States, is, a 1', A shocleabsorbe'r for incandescent electrio lamps, comprising an insulating body having an aperture, a vibration absorbing cushion supported on said body, and a block supported on said cushion and provided with a central aperture.

2. A shock-absorbing rosette for incandescent electric lamps, comprising a flanged "tubular plug and a vibration absorbing cgshion of fibrous material supporting said p u p v 3. A shock-absorbing rosette for incandescent electric lamps, comprising a tubular plug having a tapering flange and avibration absorbing cushion of fibrous material supporting'said plug.

4. A shock-absorbing rosette for incandescent electric lamps, comprising' a flanged tubular plug having a countersink in its upper end, and a vibration absorbing cushion of felt between said plug and the body of said rosette.

5. The combination with a base for a rosette, of a hollow body secured thereto, a

flanged tubular plug inside said body and extending down through an opening in the bottom thereof, a vibration absorbin cushion of felt between said lug and said and a lamp cord knotted above said plug and. rave through the same.

6. An improvement in electric rosettes comprising a cap provided with an internal recess, and a vibration absorbing cushion of insulating material in said recess, said cushion being provided with an opening for the passage of an electric cable, and a washer of insulating material by which said cable is supported.

7. An improvement in electric rosettes comprising a cap provided with an internal recess, and a vibration absorbing cushion of yielding fibrous material in said recess and provided with an opening for the passage of an electric cable, and a washer of insulating material by which said cable is supported.

in witness whereof, I have hereunto set my hand this 28th day of danuary, 1910.

' SIDNEY B. AINE. Witnesses: J

KATHERINE WILLIAMSON, EMiL A. UNTERSEE,"

body, 30 

